<template>
  <div>
    <el-card class="box-card">
      <div slot="header" class="clearfix">
        <!-- 面包屑导航 -->
        <el-breadcrumb separator-class="el-icon-arrow-right">
          <el-breadcrumb-item :to="{ path: '/' }">首页</el-breadcrumb-item>
          <el-breadcrumb-item>发布文章</el-breadcrumb-item>
        </el-breadcrumb>
      </div>
      <!-- 表单 -->
      <el-form ref="form" :model="article" :rules="rules" label-width="80px">
        <el-form-item label="标题" prop="title">
          <el-input v-model="article.title"></el-input>
        </el-form-item>
        <el-form-item label="内容" prop="content">
          <!-- 富文本编辑器 -->
          <quill-editor :options="editorOption" v-model="article.content"></quill-editor>
        </el-form-item>
        <el-form-item label="封面">
          <el-radio-group v-model="article.cover.type" @change="checkSwitch">
            <el-radio :label="0">无图</el-radio>
            <el-radio :label="1">单图</el-radio>
            <el-radio :label="3">三图</el-radio>
            <el-radio :label="-1">自动</el-radio>
          </el-radio-group>
        </el-form-item>
        <!-- 选择封面盒子 -->
        <div v-if="article.cover.type > 0">
          <cover ref="cover" :picnum="article.cover.type" :key="article.cover.type" :picture="article.cover.images"></cover>
        </div>
        <el-form-item label="频道" prop="channel_id">
          <el-select v-model="article.channel_id" placeholder="请选择频道">
            <el-option :label="item.name" :value="item.id" v-for="item in channels" :key="item.id"></el-option>
          </el-select>
        </el-form-item>
        <el-form-item>
          <el-button type="primary" @click="totalValidator(false)">发表</el-button>
          <el-button @click="totalValidator(true)">存入草稿</el-button>
        </el-form-item>
      </el-form>
    </el-card>
  </div>
</template>

<script>
// 引入富文本编辑器
import { quillEditor } from "vue-quill-editor";
import "quill/dist/quill.core.css";
import "quill/dist/quill.snow.css";
import "quill/dist/quill.bubble.css";
// 引入封面组件
import Cover from "@/views/AddArticle/Cover";
// 引入获取文章频道接口
import { getChannel, pubArticle ,getCurArticle,editArticle} from "@/api/article";

export default {
  components: { quillEditor, Cover },
  data() {
    //   文章标题验证
    const lengthValidator = (rule, value, callback) => {
      if (value.length >= 5 && value.length <= 30) {
        callback();
      } else {
        callback(new Error("标题的长度在5到30之间"));
      }
    };
    return {
      article: {
        title: "",
        content: "",
        channel_id: "",
        id:0,
        cover: {
          type: 0,
          images: [],
        },
      },
      //频道信息
      channels: [],
      editorOption: {
        placeholder: "", //占位文字
        modules: {
          toolbar: [
            ["bold", "italic", "underline", "strike"],
            ["blockquote", "code-block"],
            [{ header: 1 }, { header: 2 }],
            [{ list: "ordered" }, { list: "bullet" }],
            [{ indent: "-1" }, { indent: "+1" }],
            ["image"],
          ],
        },
      },
      rules: {
        title: [
          { required: true, message: "文章标题不能为空", trigger: "blur" },
          { validator: lengthValidator, trigger: "blur" },
        ],
        content: [
          { required: true, message: "文章内容不能为空", trigger: "blur" },
          { min: 20, max: 30000, message: "内容最少20个字", trigger: "blur" },
        ],
        channel_id: [
          { required: true, message: "文章频道不能为空", trigger: "blur" },
        ],
      },
    };
  },
  methods: {
    //   获取文章频道
    hgetChannels() {
      getChannel()
        .then((res) => {
          // console.log(res);  //res.data.data.channels
          this.channels = res.data.data.channels;
        })
        .catch((err) => {
          console.log("获取文章频道失败");
        });
    },
    // 表单提交
    totalValidator(draft) {
      // 整体验证
      this.$refs["form"].validate((valid) => {
        if (valid) {
          // 验证通过
          if (this.article.cover.type > 0) {
            let images = this.$refs.cover.transformImage();
            this.article.cover.images = images;
          }
          // 发送请求
          editArticle(this.article.id,draft,this.article)
            .then((res) => {
            //   console.log(res);
              this.$message({
                type: "success",
                message: "文章发布成功",
              });
            //   跳转到文章管理
            this.$router.push({
                path:'/articles'
            });
            })
            .catch((err) => {
              console.log("添加文章失败");
            });
        } else {
          return false;
        }
      });
    },
    // 获取当前文章的信息
    getCurrentArticle(){
        let id = this.$route.query.id;
        // console.log(id);
        getCurArticle(id)
        .then((res)=>{
            // console.log(res);
            this.article = res.data.data;
        })
        .catch((err)=>{
            console.log('获取当前文章失败');
        });
    },
    checkSwitch(){
        if(this.article.cover.type > 0){
            this.$refs.cover.emptyImage();
        }
        
    }
  },
  mounted() {
    this.hgetChannels();
    this.getCurrentArticle();
  },
};
</script>


<style lang="less" scoped>
/deep/.ql-container {
    height: 300px;
}
</style>